Cutter head



July 19, 1927. 1,636,403

E` E. BEATY CUTTER HEAD Filed Oct. 7, `1926 Patented July 19,1927.

EDWARD E. BEATY, onsna'rfrizn, Wasiiiivaroiv.

CUTTER HEAD.

.This invention relates to cutter headfs for Wood-planing machines and its object, generally, is the perfecting of heads of this character, and particularly to the. manner or means for mounting the cutter knives adjustably to the body of the head.

More specific objects and advantages of the invention will appear in the following specification.

The invention consistsin the novel construction, adaptation aifd combination of parts hereinafter described. and claimed( In the accompanying drawing,-

Figure 1 is a fragmentary side elevational view of a cutter head embodying the present invention; Fig. 2 is a detail sectional view on broken line 2-'-2 of Fig. 1; Fig. 3 is a sectional view on line B-Scf Fig. 2 and including the arbor for the head; Fig. Il is a perspective View of the head body; and llig. 5 is a transverse sectional view of one of the cutter knives.

iis shown in said drawing, the cutter head proper comprises a cylindrical body hav-k ing intermediate its length a peripheral u channel 11 to provide a: hub portion 12 and relatively Wide and narrow fiange portions 13 and 14, respectively, at its opposite ends.

Said body flanges are provided. With plura-lities of cylindrical bor-es 15 and 16 which are ari'anged in axially aligned pairs, the complementary bores of each pair being disposed-one in each flange-circnmferentially about and parallel with the axis of the arbor 17 which carries the head.

18 and 19 represent cutters of the circular type which, in the present invention, are located between the iianges "13 and 14 and are mounted upon bolts` 20 Which extend through holes 21 provided eccentrically in.

cylindrical bushings 22 and 23 fitting Within the respective bores 15 and 16. These bushings are secured against rotary movement relative to the head by means of splines 211 connected to the bushings engaging` in key Ways 25 of the head. The rotary positions of the complementary bushings being suchy that the eccentrically 'disposed bolt `receiving holes thereof are located in relatively close proximity to the peripheries of the respective flanges so that the respective busliings will provide relatively large end surfaces to serve as bearings against the associated cutter at diametrically opposite side of the latter with respect to the cutters cutting edges.

Application sied october 7, 192e. serial No. 140,038;

The inner ends 26 of the bushingsV 22 and 23 are, moreover, each disposed' in a. plane inclinedfrom a plane at right angles to the axis of the respective bushings such that bearing surfaces Willbeprovid-ed` for the side surfaces, as 27, of the cutters to maintain the latter in similarly inclined planes with respect to the associated bushing and bolt axes so as to afford side clearance to a cutter. llVh-ere a bolt has mounted thereon more than one cutter, as 19 for example, a spacer 28 is interpcsedbetvveen the. cutters.

Such spacer has both of its ends 261 in l clined with respect to planes at right angl-es tothe axis of the spacer. To prevent rotation of the spacer 28 relative tothe bushings 22 and 23, :the bolts 20 pertain-ing thereto are each provided'y with spline elements l0 to engage inv a key way 41 provided in the respective bushino'.

- To accommodate the cutterst'o the inclination of the bushing and spacer ends 26 and 26', saidcutters areeach provided with a tapering hole 30, see Figs. 3 and 5, to receive the respective bolt20.

j The bolts 2O serve to rigidly unite the respective cutters and bushings, and also with the spacers Where used, and for which purpose each bolt is provided with a head 201 to engage againstthe bushing 22 at one end of an assembly of cutters and bushings, preferably in a recess provided in the referred to bushings and screw7 threading the bolt to receive a nut 2O2 to engage against the bushing 28 at the other end of an assembly.

An assembly thus united is inovable'axially as a Whole to adjust the. lateral position of the respective cutter, or cutters, as by means of an adjustment screw 31 (Fig. 3) engaging in a screw threaded hole 32. Said screw 31 has integral therewith a collar element 33 which engages in a transverse slot 34 provided in one of the bushings 22 or 23 ofthe respective assembly.

The collar 33 advantageously operates Within a recess of the head. After the cutters are regulated longitudinally of the head by means of the respective'adjustment screws 31, as above explained, the same mayL be secured in such positions. as shown in Figs. 1 and 2, by means of set screws 36. one for each cutter and bushing assembly` extending through screvv7 threaded holes 3 7 of the flange to engage against plane surfaces 38 provided upon the respective bushings 22.

What I claim7 is l. In a cutter head having two spaced apart peripheral flange elements provided with cylindrical bores having their axes aligned With eachother and parallel with the axis of the head, an apertured cutter located between said flange elements, a bolt extending through the aperture of said eutter, bushings provided for said bolt Within the respective flange bores, and means cooperating with the bolt for securing the bushing in operative relation with respect to said cutter.

2. In a cutter head as defined in claim l in which means engageable With one of the head flanges is utilized to effect adjustments of the cutter in either direction selectively parallel With the axislof the head.

3. In a cutter head as defined in claim l in which the cutter is rotatably adjustable upon the bolt, and the bushings are secured to the respective flanges against rotary movement.

4. In a cutter head as defined in claim l in vwhich the cutter is arranged for rotary adjustments upon the bolt, and means connecting the bushings to the respective headflanges, said means preventing rotary movement of the bushings and permitting axial movement thereof to elfect lateral adjustments of the cutter. f

5. In a cutter head as defined in claim l, in which the bolt is disposed eccentrically of the bushings therefor.

6. Ina cutter head as delined in claim l in which the cutter aperture is tapered to provide seating surfaces against diametrically opposite sides of the bolt When the cutter is inclined from a plane at right angles to the` bolt axis at all rotary adjustments of the cutter.

7. In a cutter head as dened in claim l in which the bushings are provided with end surfaces engageable with thecutter for retaining the latter in a plane inclined relation to the axes of the bolt and head respectively.

8. In a cutter head provided with two peripheral flange elements, said flange elements being provided with a plurality of circumferentially spaced apart bores having their axes parallel with the axis of the head, the bores of one of said flanges being in axial alignment with the respective bores of the other flange, a circular cutter, a bolt adapted to extend through said bores and the cutter for supporting the latter, said bolt being arranged para lel with the axis of the headv` means mounted upon the bolt and engageabl-e with the cutter for securing the cutter to the bolt in inclined relation with respect toa plane at right angles to the axis of the bolt, and means acting through the medium of the aforesaid means for regulating the position of the cutter longitudinally of the head.k v

Signed at Seattle, Washington, this 17th day of September, 1926.

EDI/VARI) E. BEA TY 

